var age1 = 18;
var name1 = "zs";
var isOK;
console.log(typeof age1);
console.log(typeof name1);
console.log(name1.toUpperCase());
name1 = "LIST";
isOK = false;
function changeNameToUpper1(xxx) {
    var a = xxx.toUpperCase();
    return a;
}
var xx = function (a, b) {
    return a + b;
};
var mm = function (a, b) {
    return a + b;
};
var yy = function (a, b) {
    return a + b;
};
var result1 = xx(5, 3);
var result2 = mm(10, 20);
var result3 = yy(7, 8);
console.log(result1);
console.log(result2);
console.log(result3);
var res3 = changeNameToUpper1(name1);
console.log(res3);
var res2 = changeNameToUpper1("hello");
console.log(res2);
